F-Stop is a setting that controls the amount of light that passes through the lens by adjusting the aperture size. Which option correctly matches this definition?

F-Stop is a setting that controls the amount of light that passes through the lens by adjusting the aperture size. Which option correctly matches this definition?

• A. A setting that controls the amount of light that passes through the lens by adjusting the aperture size.
• B. A setting that measures color temperature.
• C. A setting that determines the shutter speed.
• D. A setting that selects the focal length.

Answer: (A)

F-stop describes the size of the lens aperture, which controls how much light passes to the sensor. This is expressed as an f-number; a smaller f-number means a larger aperture that lets in more light (and gives a shallower depth of field), while a larger f-number means a smaller aperture that lets in less light (and gives a deeper depth of field). The option that describes a setting that controls the amount of light by adjusting the aperture size matches this concept exactly. The other options refer to color temperature, shutter speed, and focal length—different camera controls that don’t describe how the aperture governs light.

F-stop describes the size of the lens aperture, which controls how much light passes to the sensor. This is expressed as an f-number; a smaller f-number means a larger aperture that lets in more light (and gives a shallower depth of field), while a larger f-number means a smaller aperture that lets in less light (and gives a deeper depth of field). The option that describes a setting that controls the amount of light by adjusting the aperture size matches this concept exactly. The other options refer to color temperature, shutter speed, and focal length—different camera controls that don’t describe how the aperture governs light.